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More Than One Reality Exists (in Quantum Physics)
Can two versions of reality exist at the same time? Physicists say they can -- at the quantum level, that is.
Researchers recently conducted experiments to answer a decades-old theoretical physics question about dueling realities. This tricky thought experiment proposed that two individuals observing the same photon could arrive at different conclusions about that photon's state -- and yet both of their observations would be correct.
For the first time, scientists have replicated conditions described in the thought experiment. Their results, published Feb. 13 in the preprint journal arXiv, confirmed that even when observers described different states in the same photon, the two conflicting realities could both be true. "You can verify both of them," study co-author Martin Ringbauer, a postdoctoral researcher with the Department of Experimental Physics at the University of Innsbruck in Austria, told Live Science. |
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| cauz |
March 25, 2019, 9:21 a.m. |
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| Annie Jacobsen |
Back in the 1950s, there was a top-secret program code-named SUNTAN being conducted at a top-secret facility called Skunk Works. Its objective? To develop a liquid-hydrogen-powered spy plane. Because liquid hydrogen is incredibly volatile, early experiments were conducted inside a bomb shelter with eight-foot-thick walls. |
| John Cameron |
Medical physicists work in cooperation with doctors. A few medical physicists devote their time to research and teaching. A few get involved with administrative duties. |
| James Dashner |
I've always been fascinated by quantum physics and the possibility of alternate realities. |
| Marianne Williamson |
Old Newtonian physics claimed that things have an objective reality separate from our perception of them. Quantum physics, and particularly Heisenberg's Uncertainty Principle, reveal that, as our perception of an object changes, the object itself literally changes. |
| Stephen Hawking |
In my school, the brightest boys did math and physics, the less bright did physics and chemistry, and the least bright did biology. I wanted to do math and physics, but my father made me do chemistry because he thought there would be no jobs for mathematicians. |
| Charles Darwin |
I am turned into a sort of machine for observing facts and grinding out conclusions. |
| Kate Capshaw |
The best preparation for acting is life - observing life and people and observing yourself. All that becomes your library. So when you have to research a part, a scene or an emotion, you go into the library and get what you need. |
| Stephen Hawking |
Science is beautiful when it makes simple explanations of phenomena or connections between different observations. Examples include the double helix in biology and the fundamental equations of physics. |
| Zach Galifianakis |
I used to be really cute. I could send you earlier photos where I'm stunning. But I've gained about twenty pounds over the past two years, and the more weight I've put on, the more success I've had. If you drew a diagram of weight gain and me getting more work, a mathematician would draw some conclusions from that. |
| Adam Davidson |
Unlike physics, economists don't settle things. There seems to be plenty of room for different conclusions that are still accepted in the academy. |
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Quantum Network Joins Four People Together For Encrypted Messaging
The quantum internet is starting small, but growing. Researchers have created a network that lets four users communicate simultaneously through channels secured by the laws of quantum physics, and they say it could easily be scaled up. Soren Wengerowsky at the University of Vienna and his colleagues devised a network that uses quantum key distribution (QKD) to keep messages secure [the link is paywalled]. The general principle of QKD is that two photons are entangled, meaning their quantum properties are linked.
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Researchers Created ‘Quantum Artificial Life’ For the First Time
“Our research brought these amazingly sophisticated events called life to the realm of the atomic and microscopic world …and it worked.”
For the first time, an international team of researchers has used a quantum computer to create artificial life—a simulation of living organisms that scientists can use to understand life at the level of whole populations all the way down to cellular interactions.
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China Says It Has Developed a Quantum Radar That Can See Stealth Aircraft
At a recent air show in the city of Zhuhai, state-owned Chinese defense giant China Electronics Technology Group Corporation displayed what it claims to be a quantum radar that's able to detect even the stealthiest of stealth aircraft. The company claims to have been working on the technology for years, and to have tested it for the first time in 2015. In principle, a quantum radar functions like a regular radar -- only that instead of sending out a single beam of electromagnetic energy, it uses two split streams of entangled photons. Only one of these beams is sent out, but due to a quirk of quantum physics both streams will display the same changes, despite being potentially miles apart. As a result, by looking a...
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Researchers Demonstrate Teleportation Using On-Demand Photons From Quantum Dots
A team of researchers from Austria, Italy and Sweden has successfully demonstrated teleportation using on-demand photons from quantum dots. In their paper published in the journal Science Advances, the group explains how they accomplished this feat and how it applies to future quantum communications networks. Scientists and many others are very interested in developing truly quantum communications networks -- it is believed that such networks will be safe from hacking or eavesdropping due to their very nature. But, as the researchers with this new effort point out, there are still some problems standing in the way. One of these is the difficulty in amplifying quantum signals. One way to get around this probl...
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Most likely these kinds of experiments are more useful in their assertion that experiential life and even most of science and physics takes place in a collective illusion about the characteristics and function of the universe. Ultimately the only provable observation we can make is that reality displays many layers of information to our awareness and hides others.
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Physicists reverse time using quantum computer
Researchers from the Moscow Institute of Physics and Technology teamed up with colleagues from the U.S. and Switzerland and returned the state of a quantum computer a fraction of a second into the past. They also calculated the probability that an electron in empty interstellar space will spontaneously travel back into its recent past. The study is published in Scientific Reports.
"This is one in a series of papers on the possibility of violating the second law of thermodynamics. That law is closely related to the notion of the arrow of time th...
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Lene Vestergaard Hau (born November 13, 1959 in Vejle, Denmark) is a Danish physicist with a PhD from Aarhus University. In 1999, she led a Harvard University team who, by use of a Bose-Einstein condensate, succeeded in slowing a beam of light to about 17 metres per second, and, in 2001, was able to stop a beam completely.[1] Later work based on these experiments led to the transfer of light to matter, then from matter back into light,[2] a process with important implications for quantum encryption and quantum computing.
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Quantum Questions Require Quantum Answers
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NASA's Atomic Fridge Will Make the ISS the Coldest Known Place in the Universe
Later this year, a small part of the International Space Station will become 10 billion times colder than the average temperature of the vacuum of space thanks to the Cold Atom Lab (CAL). Once it's on the space station, this atomic fridge will be the coldest known place in the universe and will allow physicists to 'see' into the quantum realm in a way that would never be possible on Earth.
In a normal room, "atoms are bouncing off one another in all directions at a few hundred meters per second," Rob Thompson, a...
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The premise stems from philosophy; are the universe and human reality real external phenomena? Mathematician Rene Descartes hypothesized the existence of a demon that presented a complete illusion of the external world to his bodily senses to hide the true world1,2. The Hindu philosopher Advaita Vedanta proposed the conscious experiences that comprise human reality are the result of a complex illusionary power to veil human minds from true reality3. Diverse thinkers have entertained the nature of reality, but epistemologically, there is consensus that simulants cannot distinguish ?false? reality from the genuine4. However, contemporary quantum computational theory may suggest otherwise.
In modern context, the Simulation Argument entails a technologically mature civilization simulating th...
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